15.5" Alamosaurus Rib Section On Stand - Texas

This is a 15.5" long rib section from the giant titanosaur Alamosaurus sanjuanensis. It comes with a custom metal display stand, and only has some minor crack repairs and gap fills.

This specimen was collected within the past year on private deeded property in Brewster County, Texas. You won't see any other dinosaur material from the Javelina Formation for sale because nearly all of the formation lies the borders of a national park or in Mexico which can not be collected. One of our partners was lucky enough to purchase several hundred acres of ranch land in Texas containing a good exposure of the Javelina Formation and we will be offering more material from the locality in the future.

These formations remain understudied, and many of the dinosaurs remain undescribed. Research collections are being put together from the locality and hopefully this material and the associated data will help shed more light on dinosaurs of West Texas in the future.



Alamosaurus is the only late Cretaceous titanosaur from North America. Some isolated bones found just meters below the Cretaceous Paleocene boundary suggest it was one of the last living non avian dinosaurs. Also it could have reached adult sizes as large as Argentinisaurus, which would make it the largest dinosaur known from North America.